Boots – shoes – and leggings
Patent
1993-03-10
1994-06-07
Cosimano, Edward R.
Boots, shoes, and leggings
G01N 2184
Patent
active
053195752
ABSTRACT:
A system and method for determining airborne particle concentrations. When in a fixed time period mode of operation, the system determines actual airborne particle concentration when a normal particle count is detected, and determines an "upper limit" particle concentration based on Poisson statistics when a low particle count is detected. In a fixed precision mode of operation, the system determines in advance the number of particles needed to be detected to achieve an airborne particle concentration measurement having a precision equivalent to a user selected fixed precision, and prints out airborne concentration measurements only when such measurements have the user selected fixed precision.
REFERENCES:
patent: 3692412 (1972-09-01), Chubb
patent: 4940327 (1990-07-01), Lilienfeld
"Rotational Electrodynamics of Airborne Fibers"; Lilienfeld; J. Aerosol Sci., vol. 16, No. 4, pp. 315-322 (1985).
"Light Scattering From Oscillating Fibers At Normal Incidence"; Lilienfeld; J. Aerosol Sci., vol. 18, No. 4, pp. 389-400 (1987).
MIE Application Note, No. 4-A; Jan. 24, 1990.
MIE Fiber Monitor Model FM-7400 User's Manual; Jul. 1991.
"An Introduction to Scientific Research"; Wilson; Section 9.2; pp. 236-237. (no date).
Cosimano Edward R.
TRC Companies Inc.
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